Improvement in rolling-mills



2 Sheets-Sheet 2.

Rolling-Milli.

Patented Sept. 2, 1879.,

a, d mm N.PETERS. PMOTO-LITHOGRAPNER. WASHINGTON. D 24 UNITED 'STATE-sPATENT OFFICE.

`JOHN N. LAUTH, OF HOWARD, PENNSYLVANIA.

VSpecification formingpart of` Letters Patent No. 219,277, datedSepteinberrQ, 1879; application filed Y May l5, 1879.

To all 'whom it may concern:

Be it known'that" I, JOHN N. LAUTH, of-

a rolling-mill of this class as to lessen the tendency of the grooves ofthe rolls to become worn at the sides.

In the accompanying drawings, Figure l is a side view of my improvedrolling-mill; Fig. 2, a plan view; Fig. 3, a transverse vertical sectionon the line l 2, Fig. l; Fig. 4, a section on the line 3 4; and Fig. 5,a section on the line 5 6.

To a suitable bed-plate, A, are secured the two standards or housings BB and two similar housings, D D; A shaft, E, is adapted to bearings c c,tted to the housings B B', and

Athe lower shaft, E', to lower bearings, b b, in

the same housings,the two shafts being geared together by wheels F F.The upper bearings, a c, are confined to their places by screws (l d andrest on detachable plates j' f, which may be removed to make way forthinner or thicker plates, as the desired adjustment of the rolls maydemand.

Similar bearings for the shafts Gr. G are adapted to the housings D D.

At a point midway, or thereabout, between the two pairs of housings aretwo vertical shafts, H H', the bearings of which are adapted tohorizontal guides on a frame, I, secured to the base-plate A, screws j jpassing through the ends of the said frame, and serving to adjust thebearings when necessary. To the lower end of each of the vertical shaftsis secured a bevel-wheel, an, each wheel gearing into a likebevel-wheel, m', on a horizontal shaft, J, which has its bearings in theends of the frame I. g

The several shafts are caused `to revolve simultaneously and in unisonin the directions pointed out by the arrows by belts, or by any suitablesystem of gearing.

All the shafts E E and G G project beyond `the housings, and thevertical shafts H H above their bearings.

To the projecting end of the shaft E is secured the grooved roll N,composed of three plain disks, n, fn, and n, the latter of less diameterthan and intervening between the disks an. The disks `are confined to acollar on the shaft by a nut, p, on withdrawing which the disks may beremoved or reversed, or replaced by new disks, as circumstances referredto hereinafter may require.

A single disk, q, of such a width as to fit snugly but freely betweenthe disks n n of the lower roll, is so fitted to the projecting end ofthe shaft E that, while it must turn with the latter, it can slide onthe shaft, its position on the latter being determined by the two disksa n of the lower roll. Precisely similar rolls areadapted to theprojecting ends of the shafts Gr G', the upper roll, however, beingcomposed of three disks, and the lower roll of onedisk, similar to thosedescribed above. l

To each of the vertical shafts H H is secured a roll composed of twodisks, t t', and an intervening disk, t, of less diameter than theothers.

The heated bar is first passed between the rolls of the shafts E E',then directed by the guide lVI to the vertical rolls, and from themalong the guide M and between the rolls of the shafts G G.

\ Rapidly-revolving rolls, such as are used 'for light bar and hoopiron, are liable to wear rapidly, and this is especially the case withthe sides of the grooves in the lower roll shown in Fig. 4. Forinstance, the inner faces of the two disks n n are more liable to wearat :and near the points :v than elsewhere. These disks are made withperfectly plain surfaces,

so that when. either of the disks a or n. has become worn all that isnecessary 1s to reverse it, so as to present a new surface in thegroove.

It is not until both surfaces of both disks have,

All the disks, as before rethe wear of the disks when the disk q,composing the upper roll, depends for its position longitudinally on itsshaft entirely upon the two disks n u of the lower roll, for in thiscase any end play of either of the shafts cannot cause any undue lateralbearing of the disks against each other.

The arrangementof all the rolls outside the housings insuresaccessibility to the rolls, and affords the best facilities forremoving, replacing, or renewing the disks of which the rolls arecomposed. s

It will be observed in Figs. l to 4 that on the shafts E E the disk isabove and the grooved roll below, While in the shafts G G thearrangement is reversed, the disk being below and the grooved rollabove. By this means any n that may be formed on the uplper edge of thestrip in its passage through Jo'HN N. LAUTH.

Witnesses DoLP'HUs T ORREY, I. S. HENRY.

